"The game I play is a very interesting one. It's imagination in a tight straightjacket, which is this: that it has to agree with the known laws of physics. [...] It requires imagination to think of what's possible, and then it requires an analysis back, checking to see whether it fits, it's allowed, according to what's known, okay?"

Richard Feynman

Accounts

Our
planet is but a mere point of light as seen from other worlds in the
solar system. This picture, taken from the surface of Mars, is the first
taken of the Earth from the surface of another planet. If Martians were
to scrutinize the Earth, this is what they would see. There is no
evidence here of divine intervention, no indication that we are special.
We see just a point of light, against the blackness of space - our
home.